allerySome P are Q; all Q are R; no R is S; some S are T. I: Some P are not S. II: Some T are not Q. III: No P is T. Which follow?
AAll three
BI and III only
CII only
DI and II only
Answer & Solution
Correct answer: D. I and II only
The P in Q cannot be S, and the T in S cannot be Q, but other P and T may overlap.
Keep practising Statements, Conclusions and Syllogisms
Browse all Statements, Conclusions and Syllogisms questions for RPF Constable, or explore more General Intelligence and Reasoning topics.
Related questions
Read the set diagramsWhat must follow?Exactly one of A,B holds. B requires C; C requires exactly one of D,E; D requires A; E exc3 objects. All A are B or C; no B is D; all C are D; some A are D; some A are B. I:Some C Exactly two switches A–D are on. Claims: A off or B on(or both); C,D same state; exactly oChoose exactly 3 of A–F. A requires B; C requires D; exactly one of B,E is chosen; F requiAll A are B; no B is C. Which extra premise ensures both “No A is C” and “Some A are not CWhich example disproves “All A are C” while satisfying “All A are B” and “Some B are C”?